mneme-server 0.4.0

Mneme: a self-hosted catalog of callables (OpenAPI operations, library symbols) and persistent memory for AI agents.

Mneme

A self-hosted catalog of callables and persistent memory for AI agents.

Mneme is a local-first indexer and search service. An LLM agent uses it to find the right HTTP API operation, library symbol, or saved note — then pull a minimal slice instead of loading entire docs into context.

Published on PyPI as mneme-server; the CLI is mneme.

Quickstart

pip install mneme-server
mneme demo                            # index a bundled spec, run a sample search
mneme mcp-config --client cursor      # paste-ready MCP config
mneme doctor                          # environment diagnostics

Index popular public APIs in one shot:

mneme crawl-seeds examples/seeds.popular.txt

The default index lives in a per-user directory (XDG-aware), so later commands work without --db.

What gets indexed

Mneme searches callables — individual things an agent can invoke or recall:

Kind	Example
HTTP operation	POST /v1/refunds
Python symbol	httpx.Client.get
JS/TS symbol	axios.create
Agent note	a saved scratch-pad entry

All kinds share one SQLite + FTS5 index and one MCP search tool (search_callables).

flowchart LR
  openapi[OpenAPI specs] --> normalize
  pylib[Python packages] --> symbols
  jslib[.d.ts files] --> symbols
  normalize --> sqlite[(SQLite + FTS5)]
  symbols --> sqlite
  notes[Notebook + workspace] --> notesdb[(notes.db)]
  sqlite --> mcp[MCP server]
  sqlite --> httpapi[HTTP API]
  notesdb --> mcp
  mcp --> agent[Agent]
  httpapi --> agent

Install

pip install mneme-server              # base CLI + HTTP API
pip install 'mneme-server[mcp]'       # + local MCP server
pip install 'mneme-server[libraries]' # + Python + JS/TS library indexing

From source:

git clone https://github.com/Joshwani/mneme.git && cd mneme
python -m venv .venv && source .venv/bin/activate
python -m pip install -e '.[dev,mcp,libraries]'

CLI

# index
mneme add-file examples/specs/todo.yaml
mneme add-spec https://example.com/openapi.yaml
mneme discover example.com --ingest
mneme crawl-seeds examples/seeds.popular.txt
mneme add-pylib httpx
mneme add-jslib --package axios --file ./axios.d.ts

# search
mneme search "create refund" --method POST
mneme search-callables "create request" --kind http_operation

# memory
mneme notes-add --title "T" --body "B" --tag x
mneme notes-search "query"
mneme workspace-enable --scope notes --max-mb 10
mneme workspace-write --scope notes --path a.md --content "..."

# serve
mneme serve --host 127.0.0.1 --port 8080
mneme mcp-server
mneme stats
mneme doctor

Use --db <path> to override the default index path.

MCP server

Mneme runs locally over stdio (or streamable HTTP). Credentials and notes stay on your machine.

pip install 'mneme-server[mcp]'
mneme mcp-server
mneme mcp-config --client cursor      # Cursor
mneme mcp-config --client claude      # Claude Desktop
mneme mcp-config --client continue    # Continue.dev

Main tools: search_callables, get_operation, get_library_symbol, prepare_http_call, execute_http_call, notes_*, workspace_*, mneme_stats. HTTP execution is dry-run by default; real calls require explicit confirmation.

Library indexing

Python — static analysis via griffe (no code execution):

pip install 'mneme-server[pylib]'
mneme add-pylib httpx
mneme add-pylib mymod --source-dir ./src

JavaScript/TypeScript — parse a local .d.ts via tree-sitter (no Node required):

pip install 'mneme-server[jslib]'
mneme add-jslib --package axios --file ./node_modules/axios/index.d.ts

Memory

Two opt-in primitives in a separate notes.db:

• Notebook — FTS5-backed scratch pad (notes-add, notes-search, …).
• Scoped workspace — small file area for snippets; off until you workspace-enable a scope.

Auth profiles

Store credentials in env vars, reference them by profile name. Agents see redacted previews, not secrets.

{
  "profiles": {
    "github": {
      "provider_domain": "api.github.com",
      "base_url": "https://api.github.com",
      "allow_methods": ["GET", "POST"],
      "auth": { "type": "bearer", "token_env": "GITHUB_TOKEN" }
    }
  }
}

Default path: ~/.config/mneme/auth.json. See examples/auth.json for a fuller example.

mneme auth-profiles
mneme prepare-call op_... --auth-profile github --json-body '{}'
mneme execute-call op_... --auth-profile github --send --confirm

HTTP API

mneme serve --host 127.0.0.1 --port 8080
curl -s -X POST http://127.0.0.1:8080/search \
  -H 'content-type: application/json' \
  -d '{"query":"create a todo","limit":5}'

Endpoints: GET /health, GET /stats, POST /search, GET /operations/{id}, GET /operations/{id}/spec-slice, POST /operations/{id}/prepare-call, POST /operations/{id}/execute-call.

Docker

docker pull ghcr.io/joshwani/mneme:latest
cd deploy && docker compose up --build -d

See deploy/ for systemd, cron, and compose examples.

Default paths

What	Env override	Default (Linux/macOS)
API/library index	MNEME_DB	~/.local/share/mneme/mneme.db
Notes index	MNEME_NOTES_DB	~/.local/share/mneme/notes.db
Workspace root	MNEME_WORKSPACE_ROOT	~/.local/share/mneme/workspace/
Auth config	—	~/.config/mneme/auth.json

Troubleshooting

Run mneme doctor first — it prints resolved paths, index size, installed extras, and a network check.

Problem	Fix
Empty search results	Run mneme demo or mneme crawl-seeds examples/seeds.popular.txt
MCP ImportError	pip install 'mneme-server[mcp]'
401/403 on execute	Check env vars referenced in your auth profile
Host not allowed	Adjust profile allow_methods / hosts, or MNEME_HTTP_ALLOW_HOSTS

Development

python -m pip install -e '.[dev,mcp,libraries]'
ruff check && ruff format --check && pytest

See CONTRIBUTING.md and CHANGELOG.md.

License

Apache License 2.0.